Dodge Challenger SRT Demon 170: The Final American Beast with 1,025 HP
The Golden Era of American Muscle: Why the Challenger Demon 170 Marks the End of an Era
The automotive landscape is undergoing a profound transformation. With the advent of electrification and tightening emissions standards, the days of the traditional internal combustion engine (ICE) are numbered. Nowhere is this more evident than in the realm of American muscle cars. Once the undisputed kings of the drag strip, these V8-powered legends are facing an existential crisis. Chrysler’s discontinuation of the third-generation HEMI V8, signaling the end of the iconic Dodge Challenger and Charger as we know them, serves as a stark reminder of this shift. These iconic models, which have defined the modern muscle car era, are being phased out in favor of six-cylinder and all-electric powertrains, as seen in the new Dodge Charger Daytona and Sixpack. Similarly, Chevrolet has placed the Camaro on hiatus, hinting at a potential future as an electric vehicle. Even the Corvette, with its mid-engine transformation in 2020, seems to be distancing itself from its muscle car roots. In this evolving environment, Ford appears to be the last bastion of traditional muscle, with CEO Jim Farley ruling out a fully electric Mustang in favor of hybrid performance options.
Amidst this automotive paradigm shift, the need to celebrate the legacy of high-horsepower production muscle cars has never been more pressing. Over the past two decades, the horsepower wars have produced some truly remarkable machines, pushing the boundaries of what was thought possible for road-legal vehicles. This article pays homage to these automotive titans, exploring the engineering marvels that have graced the streets and left an indelible mark on automotive history.
Ford Mustang Dark Horse — 500 hp
The latest entrant into the Mustang lineage, the Ford Mustang Dark Horse, represents the pinnacle of the seventh-generation Mustang’s performance. This model takes the already refined platform, characterized by its updated engine, digitalized interior, and refreshed styling, and elevates it to a new level of performance. In the previous generation, the Mustang’s highest-output, solely Ford-badged iteration was the limited-edition Mach 1, which produced 480 hp and 420 lb-ft of torque. The Dark Horse surpasses this benchmark with 500 hp and 418 lb-ft of torque, courtesy of a modified version of Ford’s legendary 5.0-liter Coyote V8 engine.
Drawing inspiration from the sixth-generation Shelby Mustang GT500, the Dark Horse incorporates the same piston connecting rods used in that vehicle’s 5.2-liter V8. Furthermore, the Dark Horse’s Coyote V8 features a dual throttle-body intake, designed to enhance airflow and optimize engine performance. These enhancements translate to impressive acceleration figures, with the Dark Horse achieving a 0-to-60 mph time of 3.7 seconds. In quarter-mile tests, it covers the distance in 12 seconds, crossing the finish line at 118.4 mph, according to MotorTrend’s findings. While these numbers might not be the absolute quickest on this list, the Dark Horse’s capabilities extend beyond straight-line speed. With the addition of MagneRide suspension, a Tremec six-speed transmission, an optional Handling Pack, and carbon fiber wheels, the Dark Horse proves to be a formidable contender on the track as well.
As of mid-2024, the Mustang Dark Horse remains in production, offering enthusiasts a chance to own a piece of modern muscle car history. With a starting price of $60,365, Ford also offers an even more exclusive, track-only variant, the Dark Horse R, catering to the most dedicated Mustang aficionados. This model exemplifies Ford’s commitment to the ICE muscle car, even as the automotive landscape shifts towards electrification.
Chevrolet Camaro Z/28 (fifth-generation) — 505 hp
The fifth-generation Chevrolet Camaro bowed out with a resurrected icon: the Camaro Z/28. This marked the first appearance of the Z/28 nameplate since 2002, and it arrived as a fitting tribute to the model’s storied history. Available exclusively for the final two model years of the fifth-generation Camaro, 2014 and 2015, the Z/28 ranked second in horsepower only to the 580-hp fifth-generation ZL1. Its powertrain consisted of a 7.0-liter LS7 engine, one of the most celebrated LS engine generations ever, producing a formidable 505 hp and 481 lb-ft of torque.
However, Chevrolet’s engineers pursued a different objective with the Z/28, prioritizing track performance over outright power. This track-focused philosophy is evident in the extensive weight-saving measures implemented throughout the vehicle. Complementing these weight reduction efforts are high-performance components such as Multimatic Dynamic Suspensions Spool Valve dampers, extra-wide Pirelli PZero Trofeo R tires, Brembo carbon ceramic brakes, and a new aerodynamic kit designed to generate increased downforce. While it may not have possessed the brute force of the ZL1, the Z/28 emerged as the superior driver’s car, earning MotorTrend’s Best Driver’s Car award in 2014.
Despite its track-oriented setup, the Z/28 remained a potent force in terms of straight-line performance. MotorTrend tested the car, recording a 0-to-60 mph time of 4.0 seconds, an impressive figure even by 2024 standards. Its quarter-mile time of 12.3 seconds at 117.2 mph rivaled the highest-horsepower variants of Dodge’s Charger and Challenger muscle cars. Sadly, Chevrolet chose not to revive the Z/28 for the Camaro’s sixth generation, leaving this iteration as a cherished memory for enthusiasts.
Chevrolet Camaro ZL1 (sixth-generation) — 650 hp
Among the pantheon of Chevrolet Camaro trim levels and models, the ZL1 stands as the undisputed king of the hill. While its origins trace back to a semi-official COPO Camaro in 1969, Chevrolet eventually embraced the ZL1 moniker for both the fifth and sixth-generation Camaros, resulting in some of the most powerful Camaros ever produced. The fifth-generation ZL1 already boasted an impressive 580 hp, courtesy of a supercharged 6.2-liter LSA V8 engine, one of the most potent powerplants ever installed in a Camaro. However, Chevrolet’s pursuit of performance excellence did not end there.
With the debut of the sixth-generation Camaro ZL1 in 2017, the company took things a step further. This new iteration featured a supercharged 6.2-liter LT4 V8 engine, an upgrade over the already potent LT1 found in the 1SS and 2SS Camaro models. The LT4 in the ZL1 produced a staggering 650 hp and 650 lb-ft of torque, solidifying its position as the most powerful production Camaro of its time. Chevrolet claimed a 0-to-60 mph time of just 3.5 seconds and a quarter-mile time of 11.4 seconds, with the ZL1 crossing the finish line at an impressive 127 mph.
Beyond its headline horsepower figures, the ZL1 was a remarkably well-rounded performance car. It incorporated advanced features such as a Magnetic Ride suspension, Goodyear Eagle F1 Supercar tires, an electronic limited-slip differential, and high-spec Brembo brakes. These components combined to create a vehicle that contemporary reviewers often compared favorably to prestigious continental sports cars from brands like BMW and Mercedes-Benz. The Camaro ZL1 remained in production through the 2024 model year, with prices starting from $72,100, offering enthusiasts a taste of American automotive excellence.
Cadillac CT5-V Blackwing — 668 hp
General Motors’ supercharged 6.2-liter LT4 engine, first introduced in the 2015 Corvette Z06, proved its mettle in the Camaro ZL1. It’s, therefore, no surprise that GM turned to this formidable powerplant for the 2022 Cadillac CT5-V Blackwing. However, Cadillac engineers didn’t simply drop the engine into the CT5-V’s engine bay; they refined it to deliver even more power. The CT5-V’s LT4 produces 668 hp and 659 lb-ft of torque, surpassing the Camaro ZL1 and earning the Blackwing the distinction of being the fastest and most powerful production Cadillac ever upon its debut.
Cadillac claimed a 0-to-60 mph time of 3.4 seconds and a quarter-mile time of 11.3 seconds, figures that were substantiated by MotorTrend’s independent testing. But Cadillac’s ambitions for the CT5-V extended beyond straight-line performance. To demonstrate the car’s track credentials, Cadillac Arabia invited current F1 Academy driver Amna Al Qubaisi to put the Blackwing through its paces at the iconic Yas Marina circuit. In 2022, Al Qubaisi set a blistering lap time of 2:20.98, establishing the CT5-V Blackwing as the fastest production sedan to ever lap the circuit.
To date, this record appears to stand unchallenged, though it’s possible that no other manufacturer has felt the need to attempt a faster time. Nevertheless,
